Sander with an adjustable guide



May 26, 1959 E.'L. WILLE SANDER WITH AN igbJus'rABLE GUIDE Filed Oct. 24, 1957 //\/|/ENTOR: EDWARD L. WILLE 5% .W.

Y ATTORNEY latter of which is to be sanded.

United States Patent This invention relates to a sander with an adjustable guide, and more particularly, it relates to a sanding block with a guide for controlling the position of the block when the latter is used in sanding adjacent corners of various angles.

It is an object of this invention to provide a sander with an adjustable guide whereby the sandpaper supported by the sanding block of the sander will not get out of parallelism with the work piece and roll or round the corner which is being sanded.

Another object of this invention is to provide a sander with an adjustable guide for use in sanding corners of various angles and with the sander being inexpensive in manufacture and easy to use, but yet completely accurate in providing the desired sharp apex to the corner being sanded.

Other objects of this invention include the provision of a sander with an adjustable guide wherein the sander can be folded into a small compact position, and wherein selected sections of the sandpaper can be exposed for the sanding operation, and wherein the sandpaper can be readily and easily positioned on the sanding block and maintained thereon while sanding, and wherein the sanding operation is done without damage or marring of the adjacent parts of the work piece which are not being sanded, and wherein the adjustable guide can be rapidly and easily locked in the desired position for whatever angularity of corner is being sanded. 1 I

Other objects and advantages will become apparent upon reading the following description in conjunction with the accompanying drawings, wherein:

'Fig. 1 is a rear perspective view of a preferred embodiment of the sander of this invention shown disposed on a fragment of a work piece.

Fig. 2 is a top plan new of the sander shown in Fig. 1.

Fig. 3 is a front elevational view of the sander shown in Fig. 1, but with the paper broken away.

Fig. 4 is an end elevational view of the sander shown in Fig. l, but showing the sander in the folded position for packaging, shipping, storing and the like, and without the paper.

The same reference numerals refer to the same parts throughout the several views.

Fig. 1 shows the sander 10 in a working position on a work piece 11 which is, of course, a wooden piece and is shown to have a right angle corner 12 which in,- cludes a top side 13 and a front or face side 14, the It is well known in sanding operations where a corner is to be sanded that even when a sanding block is used to support the sandpaper, the apex of the corner, such as the corner line 12, is often encroached upon by the sandpaper so that the corner line is somewhat sanded away until the corner actually becomes slightly rounded and is no longer sharp and distinct as preferred and as shown in the drawings. The sander 10 of the instant invention has overcome this problem of rounding the corner, and it has been found that the sander will permit comers of different 'over' the' side 13 without any marring thereof.

angles to be sanded to an end result where the corner line or apex is straight and sharp as preferred.

The sander 10 is shown to consist generally of the sanding block portion 16 and the guide or shoe 17 with the two attached so that they can be disposed to define any obtuse or acute angle therebetween as desired. The block 16 includes the plate 18 which is flat or planular in its extent for providing a flat support for the sandpaper 19 which is wrapped therearound with the sandpaper free ends 21 and 22 disposed to the rear face of the plate 18 as shown. Thus, the plate 18 provides a full support for the face of the sandpaper 19. The block 16 also includes the two ends 23 which are shown to be angularly disposed and connected with the face plate 18. The ends 23 have slots or openings 24 cut therethrough for the reception of the bolts 26 which can slide along the length of the slots 24.

The guide or shoe 17 includes an intermediate planular or plate portion 27 which has connected thereto the two angled ends 28 which includes the extension 30 with the ends having slots 29 obliquely disposed in the ends 28, as best shown in Fig. 4. The slots 29 both receive the screws or bolts 26 so that a washer 31 and a wing nut 32 on each bolt 26 secures the guide 17 to the shoe 16. By virtue of the slots 29, the guide 17 is movable toward and away from the shoe 16 and, of course, the guide 17 is also movable along the length of the cutout 24 on the shoe 16 so that the guide is movable in the two directions mentioned and is also pivotal. about the aXis on the bolts 26 so that the guide can be placed in the folded position shown in Fig. 4, and it can also be placed in any angular position with respect to the shoe 16. The block 16 and the guide 17 are thus channel shaped.

"Of course, it is important that in the reciprocating sanding motion of the sander, the guide 17 must not mar the side 13 of the work piece, and to this end, the guide is provided with rounds 33 so that the guide will slide Also, the guide ends'28 in their extensions 30 across the plane of the plate 18 and also the block ends 23 serve to hold the sandpaper in position on the block so that the reciprocation of sanding will not cause the paper to slide either along the block or even off the block as the ends mentioned will keep the paper on the block. Further, the ends are so arranged that the sander can be folded into a very compact unit, as shown in Fig. 4, with the ends 28 of the shoe 17 overlying the ends 23 of the block 16.

It has been found that the sander shown and described can be rapidly and easily placed in the operating position with the desired precise angle between the shoe 16 and the guide 17, and this is accomplished by the slot arrangement described and by the bolts with the wing nuts described. To facilitate this, it is preferred that the bolts 26 have attached thereto rectangularly shaped plates or washers 34 which abut the back face of the plate 18 when the wing nuts 32 are turned for tightening. With this arrangement, the bolts 26 are always in position and ready to be locked by the tightening of the wing nuts 32 and, of course, the stops or washers 34 will prevent the rotation of the bolts 26 when the wing nuts are rotated to their final seated position. Of course, if it were ever preferred, the guide 17 could be easily removed from the block 16 so that the block could be used without the guide, and, of course, the guide 17 can be rotated to a position behind the block 18, and in such a position, the guide would become a handle for the block when the latter is used without using the guide in sanding on a flat work piece. In this (regard, it will be understood that the guide 17 can be pivoted around to the rear of the block 16 as the bolts 26 are moved to the opposite ends of the slots 24 with respect to Fig. 4, and the guide can then be swung around to what would be an inverted position from that shown in Fig. 4, and this would place the guide in position for use as a handle in the sanding operation.

Still another versatile feature of the guide 17 is the fact that it can be disposed in any position along the slot 24 so that various sections of the sandpaper 19 will be presented to the corner face 14. Of course, also if the face 14 is of only a short height, then the guide 17 could be lowered in the slots 24 until only that desired and corresponding short height of sandpaper is exposed to the face 14. This particular feature also permits the full and complete use of the sandpaper as the various sections of the sandpaper can be exposed until the entire piece of the sandpaper is expended. Also, the sandpaper can be wrapped in different positions about the plate 18 to expose different sections of the sandpaper, though this particular feature is old in itself as it has been done in sanding operations where a simple and conventional type of sanding block is employed.

While a specific embodiment of this invention has been shown and described, it should be obvious that certain improvements or changes could be made in the embodiment, and the invention should, therefore, be limited only by the scope of the appended claims.

What is claimed is:

l. A sander comprising a block for receiving and supporting sandpaper in a planular position and having a slot in each end of said block, a bolt slidably disposed in each said slot for sliding movement therealong, a guide pivotally mounted on each said bolt andincluding a face disposed at an angle to said planular position, means for tightening each said bolt to releasably secure said guide to said block at said angle and with said guide being pivotal to selected positions of various angles to said planular position.

2. A sander comprising the combination of a sanding block and a guide with each formed of a channel shape to include an intermediate plate portion and opposite ends angularly disposed to one side of said plate portion and having aligned openings therein, said plate portion of said sanding block being flat for receiving a piece of sandpaper with the edges of the latter in abutment with said ends of said block, said guide and said block being 4 dimensioned to nest together one within the other with all said openings registered and with the plate portions thereof juxtaposed, and means in said openings on said block for pivotally attaching said guide thereto through said openings of said guide and releasably securing said guide in selected pivotal positions.

3. A sander comprising the combination of a sanding block and a guide with each formed of a channel shape to include an intermediate plate portion and opposite endsangularly disposed to said plate portion and having slots therein and said ends of said guide being extended in the direction of the plane of said plate portion of said guide, the length between said ends of said plate portion of said guide being dimensioned slightly larger than the corresponding length of said plate portion of said block to nest over said block with all said slots registered with each other, and means in said slots on said block for pivotally attaching said guide thereto through said slots of said guide and releasably securing said guide in selected pivotal positions with respect to said block, said guide being slidable along said means by virtue of said slots in said guide and being slidable along said block by virtue of said slots in said block.

4. A sander comprising a sanding block including a plate for supporting a piece of sandpaper and including opposite ends attached to said plate and disposed perpendicular to the latter, each of said ends including a slot oriented in the direction of the plane of said plate, a bolt disposed in each said slot and projecting outside of said ends, a guide plate including an intermediate portion and opposite ends disposed perpendicular to said intermediate portion with each of said ends having an opening therein and the latter respectively receiving the projected end of each said bolt to pivotally mount said guide plate on said block, a nut on each said bolt for securing said guide plate in selected pivotal position with respect to said block, and a stop on each said bolt for abutting said block and holding each said bolt against rotation.

References Cited in the file of this patent UNITED STATES PATENTS 618,008 Hoerner Jan. 17, 1899 1,941,367 Silver Dec. 26, 1933 2,195,129 Hood Mar. 26, 1940 

